Table 2:
Results of univariate analysis looking at any complication (transient or permanent neurologic deficit) during embolization*
| Criteria | Odds Ratio (95% CI) | P value |
|---|---|---|
| Male Gender | 0.80 (0.38–1.69) | .56 |
| Presenting Symptom | ||
| Hemorrhage | 0.96 (0.42–2.23) | .93 |
| Seizure | 0.68 (0.30–1.52) | .35 |
| Headache | 0.71 (0.23–2.19) | .55 |
| Neurologic deficit | 1.90 (0.76–4.73) | .17 |
| Incidental finding | 1.82 (0.46–7.23) | .40 |
| mRS score at diagnosis | ||
| 0–2 | 0.90 (0.28–2.88) | .86 |
| 3–5 | 1.11 (0.35–3.52) | .86 |
| AVM Features | ||
| Eloquent cortex involved | 1.48 (0.57–3.84) | .43 |
| Deep venous drainage | 1.07 (0.5–2.3) | .86 |
| Spetzler-Martin grade | ||
| I and II | 1.50 (0.15–15.46) | .73 |
| III | 0.64 (0.07–6.14) | .69 |
| IV | 1.09 (0.11–10.35) | .94 |
| V | 1.88 (0.19–18.32) | .59 |
| Basal ganglia location | 2.11 (0.88–6.10) | .09 |
| Nidal volume reduction (%) | ||
| 0–24 | 0.03 (−0.77–0.83) | .96 |
| 25–49 | −0.19 (−0.63–0.25) | .65 |
| 50–74 | −0.19 (−0.59–0.21) | .63 |
| >74 | 0.35 (−0.04–0.74) | .37 |
| Number of embolization sessions | ||
| 1 | 0.09 (−0.34–0.52) | .82 |
| 2 | −0.61 (−1.06–0.16) | .18 |
| 3 | 0.23 (−0.22–0.68) | .61 |
| 4+ | 0.31 (−0.11–0.73) | .46 |
| Number of pedicles embolized | ||
| 1 | −0.33 (−0.68–0.02) | .34 |
| 2 | 0.29 (−0.05–0.63) | .38 |
| 3+ | 0.14 (−0.28–0.56) | .73 |
Note:—CI indicates confidence interval.
*
All data reflect complication rates per patient (n = 192), except for number of pedicles embolized, which reflects rates per session (n = 489).